hi, We are facing some problem when calling MPI_Send over IB. The problem looks similar to ticket https://svn.open-mpi.org/trac/ompi/ticket/232, but this time its for IB Interface. When forcefully running the program using --mca btl tcp,self its running fine. On Ib, its giving error messages like local protocol error, flush error, invalid request error, local length error kind of messages.Any help would be appreciated.-Neeraj